For proper illumination the organ lamp light tube should be approximately 16 inches above the music rack ledge. This will provide plenty of height for even over-sized scores. Your Electralamp will be shipped for the correct height when you order with the height as calculated below.
A = Measure the distance of the top of the music rack above the top of the console (in inches).
B = Measure the distance from the top of the music rack to the ledge (in inches).
Enter the values of A and B in the following calculator, then click "Calculate" to arrive at the lamp height.